Dear Loops friends,
You might be interested in the attached paper just accepted by Frontiers in Physics. It can also be downloaded at:
https://gcc02.safelinks.protection.outlook.com/?url=http%3A%2F%2Farxiv.org%2Fabs%2F2307.13825&data=05%7C01%7CJames.A.Klimchuk%40nasa.gov%7C9e6d4ff004574174f2ac08db8e38eb13%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C638260147337829822%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=VysUfUQ3QK1lYZ4dxFK7Zo%2Bm1oJ8MFfuDZyGV6E%2F9PM%3D&reserved=0
The paper discusses the conditions for current sheet equilibrium and argues that
some quasi-statically evolving current sheets undergoing slow stressing – such as when the coronal magnetic field is subjected to
photospheric driving – may reach a critical shear, at which point they lose equilibrium, spontaneously collapse, and reconnect. The critical shear is generally consistent with the heating requirements of solar active regions. This new pathway to reconnection
onset may have broad application.
Cheers,
Jim
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James A. Klimchuk (he/him)
NASA Goddard Space Flight Center
Solar Physics Lab, Code 671
Bldg. 21, Rm. 158
Greenbelt, MD 20771
USA
Phone:
1-301-286-9060
Fax:
1-301-286-7194
E-mail: James.A.Klimchuk@nasa.gov
Homepage:
http://science.gsfc.nasa.gov/sed/bio/james.a.klimchuk
No endorsement by NASA is implied for any correspondence related to my official role in professional organizations.
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